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True [87]
4 years ago
15

Let mAngleA = 40°. If AngleB is a complement of AngleA, and AngleC is a supplement of AngleB, find these measures.

Mathematics
2 answers:
ludmilkaskok [199]4 years ago
7 0

Answer:

m\angle B = 50^\circ

m\angle C = 130^\circ

Step-by-step explanation:

We are given the following information in the question:

m\angle A = 40^\circ

Angle B is a complement of Angle A. Thus, we can write:

\angle A + \angle B = 90^\circ\\\angle B = 90 - m\angle A\\\angle B = 90 - 40 = 50\\m\angle B = 50^\circ

Angle C is a supplement of Angle B. Thus, we can write:

\angle C + \angle B = 180^\circ\\\angle C = 180 - m\angle B\\\angle C = 180 - 50 = 130\\m\angle C = 130^\circ

wlad13 [49]4 years ago
5 0

Answer:

the answer is m angle B = 50

m angle C = 130

Step-by-step explanation:

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